TD6600 is an intelligent instrument dedicated to testing the technical performance of relay protection testers . It can accurately measure multi-channel AC/DC voltages, currents, and small signal voltages with a high accuracy level of Class 0.02 . This allows users to perform full-function verification and calibration of relay protection testers rated at Class 0.05 or below . Compared to traditional calibration methods, the TD6600 offers major advantages including simplified wiring, improved testing efficiency, and user-friendly operation. Its advanced measurement capability, stability, and multi-channel structure make it suitable for use in laboratory calibration environments, manufacturing verification, and professional metrology applications. AC/DC Measurement Specifications (6 Channels) Voltage Range Resolution Uncertainty (k=2) (ppm RD + ppm RG) Temperature Coefficient (ppm RD / C) 2 V 10 V 120 + 80 < 5 5 V 10 V 120 + 80 < 5 10 V 0.1 mV 120 + 80 < 5 20 V 0.1 mV 120 + 80 < 5 50 V 0.1 mV 120 + 80 < 5 100 V 1 mV 120 + 80 < 5 200 V 1 mV 120 + 80 < 5 500 V 1 mV 120 + 80 < 5 1000 V 10 mV 120 + 80 < 5 Note: RD = Reading Value, RG = Range Value Current Range Resolution Uncertainty (k=2) (ppm RD + ppm RG) Temperature Coefficient (ppm RD / C) 10 mA 0.1 A 120 + 80 < 5 20 mA 0.1 A 120 + 80 < 5 50 mA 0.1 A 120 + 80 < 5 100 mA 1 A 120 + 80 < 5 200 mA 1 A 120 + 80 < 5 500 mA 1 A 120 + 80 < 5 1 A 10 A 120 + 80 < 5 2 A 10 A 120 + 80 < 5 5 A 10 A 120 + 80 < 5 10 A 0.1 mA 120 + 80 < 5 20 A 0.1 mA 120 + 80 < 5 50 A 0.1 mA 120 + 80 < 5 General Specifications Power Supply AC (220 22) V, (50 2) Hz Warm-up Time 20 minutes Maximum Power Consumption 100 VA Temperature Performance Working: 0C ~ 45C Storage: -20C ~ 70C Humidity Performance Working: < 80% @ 30C, < 70% @ 40C, < 40% @ 50C Storage: 20%~80% R.H (non-condensing) Altitude < 3000 m Weight Approx. 18 kg Communication Interface RS232, USB, LAN Dimensions 480 mm (W) 400 mm (D) 270 mm (H) (excluding handles and feet)